Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4bccb7590c6af5…

MALICIOUS

PDF

89.1 KB Created: 2021-04-02 04:57:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: af2c48eaeef1344655bae32c9e5dd5e6 SHA-1: 57361c7db17b1f13c8de7e57cbcd25ad72810a82 SHA-256: eb4bccb7590c6af567c42a6d8c0698b7142297a06326fb9ea42f0c0765d61383
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jacksth.ru/award?keyword=dependencia+benzodiazepinicos+pdf PDF link annotation
    • https://cdn.sqhk.co/neruxojus/Uieidm1/wulinerasotufores.pdfIn PDF document text
    • https://cdn.sqhk.co/xilasexiki/p5Whjn4/90496110216.pdfIn PDF document text
    • http://hookup153.fun/dedajuraduvitevaxukadoge5trc.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxudofexal/igcWngd/rwby_world_of_remnant_kingdoms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388428/normal_603a57ef592c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496013/normal_600c061c2900b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404290/normal_5ff2d87f3934e.pdfIn PDF document text
    • http://amaryllis.space/ftl_ship_unlock_guidemvlt7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367919/normal_5ff31757d0c22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_60551df09c6b7.pdfIn PDF document text
    • http://pshcomonhere.xyz/wepif258kx.pdfIn PDF document text
    • https://cdn.sqhk.co/banuluwopote/Bjeiggi/buwulebopotupixetuwubizu.pdfIn PDF document text
    • https://cdn.sqhk.co/vekotevudoze/Sjgd9ge/bni_business_builders_kelowna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417403/normal_6058f7c9c6d9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488809/normal_5fccfd80d3e57.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/iGtibrX/oceanhorn_2_pc_gameplay.pdfIn PDF document text
    • http://insuranceautousa.com/69472891263cljms.pdfIn PDF document text
    • https://cdn.sqhk.co/figesuweno/ibrjahj/gatuvatufadorefeturalev.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • https://cdn.sqhk.co/zaliroded/GRPgijc/24804880679.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tosego/define_the_concept_of_sociology_of_education.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/best_app_to_instagram_videos_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/58306274771.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/pirenolobalegofe.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/89227888194.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11910 5212 bytes
SHA-256: 8bdca9df43955043f532ff830df04c90bed6d550bd8b7fa9c74ecd6572aa1738
font_01_sfnt_off00012ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE5 14032 bytes
SHA-256: 5fcd7453898addcb0dd42f9d4811002e20555bc46b397eac5acaea386f159960

Open this report in the interactive analyzer, or submit your own file for analysis.